The Ultimate Guide to JMeter Performance Testing Tool

 Exploring API Performance Testing with Postman

Hello, tech enthusiasts and creative developers! I’m Vu, the author of SupremeTech’s performance testing series. In the article “The Ultimate Guide to JMeter Performance Testing Tool,” we explored JMeter's strengths and critical role in performance testing. Today, I’m introducing an exciting and straightforward way to do API performance testing using Postman. What is Postman? Postman is a robust API (Application Programming Interface) platform that empowers developers to quickly design, test, document, and interact with APIs. It is a widely used tool for testing APIs, which is valuable in software development, primarily web or mobile app development. Why Use Postman for API Testing? Postman is favored by software developers, testers, and API specialists because of its many advantages: User-Friendly Interface: Postman’s intuitive design makes it easy to use.Supports Diverse HTTP Methods: It handles requests such as GET, POST, PUT, DELETE, PATCH, OPTIONS, and more.Flexible Configuration: Easily manage API request headers, parameters, and body settings.Test Automation with Scripts: Write JavaScript code within the Tests tab to automate API response validation.Integration with CI/CD: Postman's CLI tool, Newman, seamlessly integrates with CI/CD pipelines, enabling automated API testing in development workflows.API Documentation and Sharing: Create and share API documentation with team members or clients effortlessly. Performance API Testing on Postman As of mid-2024, Postman introduced a new feature allowing users to perform API performance testing quickly and conveniently. With just a few simple steps, you can evaluate your API’s performance under high load and ensure its strength. Step 1: Select the Collection for Performance Testing Open Postman and navigate to the Collections tab on the left sidebar.Choose the Collection or Folder you want to test. Step 2: Launch the Collection Runner After selecting your desired Collection or Folder, click Run Collection to open the Collection Runner window.In the Runner, select the APIs you want to include in the performance test.Switch to the Performance tab and choose a simulation method:Fixed: Simulates a fixed number of users.Ramp Up: Starts with a few users and gradually increases.Spike: Introduces a sudden surge in traffic followed by a reduction.Peak: Increases traffic to a high level and sustains it for a period. Step 3: Adjust Virtual Users and Test Duration Configure the Virtual Users and Test Duration settings to simulate the desired load.Start with smaller values, then gradually increase them to gain a clear understanding of your API's performance under varying conditions. Step 4: Run the Test Click Run to start the performance test.During the test, Postman will send API requests and provide real-time data on:Response Time: The API's duration to respond to a request.Error Rate: The percentage of failed requests.Throughput: The number of API requests the system can handle per second. Step 5: Analyze the Report Once the test is complete, Postman generates a detailed report, including: Response Time: Tracks the duration it takes for APIs to process requests.Error Rate: Highlights any issues encountered during testing.Throughput: Measures the system's capacity to process requests under load. Use these metrics to evaluate whether your API performs efficiently under heavy traffic. These insights will guide you in optimizing your API for better performance. Leverage Customization for Realistic User Simulation Postman allows you to customize request data for each virtual user. You can upload a CSV or JSON file with unique datasets if you want different data for each user. This feature enables a more accurate simulation of real-world user behavior. After each test run, Postman provides an easy-to-understand report highlighting the areas for improvement. You can track performance changes and compare test results to identify weaknesses and refine your API. Test and Optimize Your API with Postman With Postman’s new performance testing feature, API optimization has never been easier. It helps you quickly identify and address potential issues to ensure your system is always ready to handle user demands effectively and reliably.   For more details and step-by-step guidance, check out the following resources on the Postman website:   OverviewRun a performance testView performance test metricsDebug performance test errorsInject data into virtual users Start your API performance optimization journey with Postman and prepare your system to meet every demand seamlessly. >>> Explore more articles about performance testing: SupremeTech’s Expertise in the Process of Performance Testing

SupremeTech’s Expertise in the Process of Performance Testing

In the previous article discussing The Importance of Performance Testing and SupremeTech's Expertise, we understood the overview of performance testing and its significance for businesses. Let me introduce how SupremeTech manages performance and the process of performance testing to ensure our products are always ready to face real-world challenges. At SupremeTech, product performance is not just a priority but a commitment. So how to do performance testing? Below is a detailed process of performance testing that we implement to ensure applications operate stably and efficiently under any usage conditions. For more insights into Performance Testing, check out our blogs below: The Ultimate Guide to an Essential JMeter Performance Testing Tool Step 1: Application Optimization   1.1 Optimizing OPCache Infrastructure Team Responsible for configuring and fine-tuning OPCache on the server.Ensures that JIT (Just-In-Time) caching is enabled and that parameters align with system resources. 1.2 Database Optimization Back End Team Designs composite indexes to enhance query speed.Rewrites or optimizes SQL queries to improve efficiency and reduce execution time.Analyzes common queries and data flows. 1.3 Optimizing Laravel During Deployment Back End Team Considers activating Production Mode in Laravel.Executes the command php artisan optimize to optimize application configurations. Infrastructure Team Manages caching for configurations, routes, and views.Supports the deployment and integration of queues or jobs on the server system. Step 2: Preparing for Performance Testing Collaboration among teams is crucial to ensure that every preparation step is accurate and ready for the performance testing process. 2.1 Developing a Plan and Initial Estimates QC Team, Back-End Team Creates a detailed plan for each phase of performance testing.Proposes resource, time, and data requirements. Project Technical Leader (PTL) Reviews and approves the testing plan.Coordinates appropriate resources based on preliminary estimates. 2.2 Security Checklist Project Technical Leader (PTL) Develops a checklist of security factors to protect the system during testing. QC Team, Back End Team Review the checklist to ensure completeness and accuracy. 2.3 Preparing Test Data QC Team Creates accounts, test data, and detailed test scenarios.Writes test scripts to automate testing steps. Back End Team Assists in building complex test data or necessary APIs.Reviews and tests scripts to ensure logic aligns with the actual system. Step 3: Setting Up the Testing Environment Coordination between the QC and Infrastructure teams is essential to ensure an optimized testing environment is ready for subsequent phases. 3.1 Estimating Server Specifications Infrastructure Team Determines appropriate server configurations based on application needs and testing requirements.Provides optimal specifications based on available resources and product scale.Supplies information about physical resources and infrastructure to support testing. 3.2 Establishing the Testing Environment Infrastructure Team Installs and configures virtual machines for performance testing.Adjusts server parameters (CPU, RAM, Disk I/O) to meet testing criteria. QC Team Confirms that the environment is ready for testing based on established criteria. 3.3 Adjusting Parameters According to Testing Requirements Infrastructure Team Modifies server configurations based on optimal parameters suggested after initial tests.Ensures configuration changes do not affect system stability. Step 4: Conducting Tests 4.1 Performing Performance Tests QC Team Executes load tests on APIs and key functionalities.Utilizes testing tools (JMeter, k6, Postman, etc.) to measure performance. Infrastructure Team Supports environment management and monitors system resources during testing. 4.2 Reporting Results QC Team, Infrastructure Team Compiles test results (response times, CPU load, RAM usage, etc.) from various tools.Compares results against established performance targets.Sends detailed reports to stakeholders (PTL, Backend Team). 4.3 Post-Test Optimization Backend Team Analyzes test results and fixes bugs or optimizes source code and application logic. Infrastructure Team Adjusts server configurations or optimizes system resources based on test outcomes. QC Team Re-run tests after optimization to ensure improved performance is achieved.Compiles final test results and confirms with stakeholders. Step 5: Clearing Test Data 5.1 Restoring Server Configuration to Initial State Infrastructure Team Resets server configurations to their original state to reduce unnecessary resource consumption.Deletes or powers down virtual machines used during testing.Ensures no temporary configurations or unnecessary test environments remain in the system. 5.2 Removing All Test Data from Databases QC Team Identifies test data that needs deletion to prevent junk data from affecting the live system. Back End Team Safely deletes test data from the database while ensuring no production data is mistakenly removed.Verifies that the database is clean after deletion. This process of performance testing enables SupremeTech to optimize each stage effectively, ensuring our products achieve optimal performance before delivery to partners. With our experienced workforce, we consistently prioritize product efficiency and quality.

The Importance of Performance Testing and SupremeTech’s Expertise

Hello everyone, I’m Vu, a dedicated Quality Control professional committed to delivering software and applications that provide the best user experience. With over 12 years of experience in the industry, I am excited to share valuable insights on Performance Testing—an essential step to ensure that software functions smoothly and effectively before it reaches users. Even a slight delay can lead to customer loss in today's fast-paced era, making performance testing crucial for all businesses. How can systems maintain smooth operation during unexpected traffic spikes? How can we prevent crashes during peak times? The solution lies in performance testing. At SupremeTech, we provide high-quality performance testing solutions that guarantee your systems remain stable and efficient. 6 Notable Technology Incidents From the Past Healthcare.gov (2013): This insurance website crashed completely when it launched, leading to significant confusion among American citizens.Amazon Prime Day (2018): The e-commerce giant lost substantial revenue on the epic sale because the platform had crashed.Google Cloud (2019): A configuration issue caused Google Cloud to crash, affecting numerous primary services and highlighting the importance of performance testing.Zoom During the Covid Pandemic (2020): To meet the surge in online work demand, Zoom had to build its infrastructure rapidly.Facebook Outage (2021): A configuration error caused the entire Meta ecosystem to go down for 6 hours, resulting in significant reputational and financial losses.PlayStation Network (2023): Shortly after launching a new game on PlayStation 5, Sony was unprepared for gamers' inability to download it. These incidents serve as a wake-up call for all businesses. No system is immune to performance issues if it hasn't been thoroughly tested and optimized. Here are some key reasons why companies should prioritize Performance Testing for their products: Prevent Revenue Loss: A slow or crashing system can drive customers away, leading to lost revenue.Protect Brand Reputation: Major performance incidents often leave a negative impression, damaging credibility.Prepare for Growth: Testing allows you to scale operations confidently without worrying about system issues. What is Performance Testing? Performance testing is a method of testing, measuring, and evaluating a system's speed, stability, and load capacity to ensure it operates effectively under various conditions. Overview of Performance Testing: Load Capacity Assessment: Determining the maximum load limit that the system can handle.Identifying Bottlenecks: Finding weaknesses as a way to enhance performance.Improving User Experience: Ensuring users have a smooth experience while protecting brand reputation. Types of Performance Testing Load Testing: Evaluating load capacity by simulating large numbers of concurrent users. We identify the system's load threshold and address weaknesses before issues arise.Stress Testing: Pushing the system to its maximum limits to test its response in worst-case scenarios, ensuring safety.Endurance Testing: Assessing system durability when operating continuously over long periods to ensure stable performance.Spike Testing: Simulating sudden spikes in traffic, such as during major sales campaigns, helping businesses prepare for peak hours. SupremeTech's Exceptional Capabilities Flexible Integration with Various Platforms: We can conduct tests across diverse platforms, from mobile applications and websites to complex systems, ensuring optimal performance for all platforms.Detailed Data Analysis: We not only identify bugs but also provide detailed reports with optimization recommendations based on real data.  This helps you effectively address performance issues.Flexible Automated Updates: SupremeTech's automated systems allow businesses to adjust and optimize their processes easily as they grow.Dedicated Consulting Team: SupremeTech's experienced experts are ready to support you from planning through implementation and maintain high efficiency. SupremeTech - Your Partner for Optimal Performance At SupremeTech, we are committed to researching advanced technologies, maintaining professional workflows, and employing a passionate team to deliver exceptional value in all our products and services. Performance testing is more than just a technical task; it is essential for maintaining your reputation and achieving market success. Allow SupremeTech to enhance your products for today and the future. For more insights into Performance Testing, check out our blogs below: The Process of Performance Testing at SupremeTechThe Ultimate Guide to an Essential JMeter Performance Testing ToolPerform API Testing using Postman

SupremeTech’s AI Hackathon 2025: A blend of Product-Focused Spirit and AI-assisted Development

On September 6–7 of 2025, we hosted our very first AI-Driven Development Hackathon. Ten teams, all made up of SupremeTech members, stepped out of their daily routines to take on real business challenges. Within just 22 hours, they brainstormed, coded, and pitched solutions showcasing their creative application of AI-powered tools. This Hackathon was more than a competition. It was an opportunity for SupremeTech’s members to experiment with AI in practical ways, strengthen their teamwork, and grow into product builders in the AI era. And, of course, they get themselves a chance to win VND 100,000,000 in prize money. Real business challenges from retail & tourism industries Before jumping into the final pitches of 10 teams, let’s take a look at the challenges that will later inspire their creativity. Some of them are quite familiar topics, while others might be a bit more challenging and out-of-the-box.  As CEO Mr. Bình explained: “When shaping the problem statement, I wanted to balance three things. First, it had to be close enough to our real business so that outcomes could have practical value. Second, it needed to challenge teams to apply AI meaningfully not just add AI as a decoration, but use it to create efficiency or new capability. And third, it should be simple and open enough so that everyone, regardless of role, could participate and learn something from the process.” Though this Hackathon centers the theme of “AI-Driven Development”, each challenge was designed to be: Close to real business needs so that outcomes could have practical applicationsAI-driven, but in a practical and meaningful way, to create efficiency or new capabilitiesOpen enough for all roles to participate, learn, and contribute Now, let’s dive into the details of each challenge.  Omnichannel E-Commerce & Loyalty App for Retail Brands This is one of SupremeTech’s current areas of expertise and key services. By including it as a challenge topic, teams worked on solutions that are highly applicable to existing clients, directly supporting our clients’ business growth.  For participants who face this challenge, it could be both a blessing and a curse. We’ve been building and managing a variety of EC and loyalty systems for clients. But when it comes to building a new one using AI, replicating the past experience may not be a smart choice. Judges, for sure, would want to see some real enhancements in the development process empowered by AI, not to mention the creativity in the strategic approach to this very familiar topic.  The original statement requires teams to develop an application that solves the problem of disconnected retail experiences. The solution should unify online and offline shopping while deeply integrating loyalty programs and personalization.  There could be a huge number of variations coming up from this statement. Stay tuned for the highlight performance!  Destination and Experience Management System for Tourism Managing group travel is a complex task often disturbed by miscommunication and inefficiencies. In a tourism hub like Da Nang, where businesses host frequent tours and events for a very large group of travelers, the ability to streamline logistics and improve participant engagement directly impacts customer satisfaction.  For companies, such apps not only reduce operational headaches but also enhance the overall brand experience they deliver. It can even drive sales if well structured and managed. In this statement, teams are required to develop a platform that streamlines group trip management. The solution should enable organizers to coordinate transportation, schedules, and interactions in one place, instead of relying on scattered tools like messenger apps.  The topic reflects SupremeTech’s own company trip pain points and has strong application potential for Da Nang’s tourism and hospitality businesses. Talent & Performance Management System for HR Apart from two industries above, in the third problem statement, we aimed to tackle the challenges of every human-driven company like ourselves.   When it comes to an integrated platform that not only tracks performance but also supports continuous growth and recognition, there’s very few choices.  This statement requires teams to develop an application that solves the problem of fragmented performance management. The solution should integrate goal setting, performance tracking, continuous feedback, and talent development into a single platform, helping organizations build a transparent culture where employees are recognized and aligned with business goals. How teams build the product is as important as the product itself Just as important as what teams built was how they built it. The Hackathon wasn’t only about coming up with clever ideas, it was about proving that execution, process, and teamwork are just as critical as the final product.  Many teams leaned on AI not just as a tool but as a true co-pilot: using AI-assisted frameworks to prototype faster, automating repetitive tasks, automating testing, and finding smarter ways to accelerate Agile development. What stood out was how teams adapted their workflows to make the most of AI. Some rethought their sprint planning with AI-driven insights. Others applied AI models to cut down on development cycles. And many discovered new ways to collaborate more effectively by letting AI handle the heavy lifting.  The Hackathon turned into a live experiment in how AI can reshape the way we build software. Creativity isn’t just in the idea itself, but in the entire journey of bringing it to life. Perspectives from the leaders and the participants From leadership: The Hackathon aligned employees with real client challenges, ensuring that innovation can directly contribute to business value. It proved that AI can be embedded into everyday problem-solving, not just theoretical projects. As Vice President Mr. Vĩ shared: “AI has already been selectively applied in SupremeTech’s real projects, depending on client expectations and suitability. In many cases, it helps optimize software production costs and shorten time-to-market. Through this Hackathon, I hope to spread the AI-assist mindset to a larger part of the company, so that AI gradually becomes embedded across all projects: enhancing efficiency, improving quality, and ultimately bringing benefits to both clients and the company. This year’s Hackathon focuses more on unlocking internal strength and setting a direction for the future. If everything goes according to plan, we will publish AI-assisted development as a new service offering. It is a clear statement that AI is being strategically applied at SupremeTech to deliver tangible value to our clients.” From participants: The challenge statements sparked two different but equally positive reactions.  Some teams loved how practical and relevant they were by mirroring the real projects we handle at SupremeTech. This gave them the perfect chance to not only test AI-assisted development but also to build solutions that might one day become our next official product. On the other hand, many appreciated how broad the challenges were. It leaves space for bold ideas and limitless creativity. With that freedom, participants could push boundaries, think like product owners, and imagine possibilities beyond the usual project scope. Conclusion The SupremeTech AI Hackathon 2025 proved to be more than an internal competition. From a business perspective: Participants gained experience and insights that sharpened their ability to think with a business mindset, ensuring their solutions were tied to real market needs. From a technical perspective: The event introduced an AI-assisted development process and innovative frameworks that can be applied immediately in client projects. By turning challenges into opportunities, the Hackathon reinforced SupremeTech’s positioning as a future-ready partner, capable of combining innovation, culture, and technical excellence to deliver AI-driven value to clients.